The day after the incident of 9-11 where all planes were grounded and military jets were protecting our skies I spotted 3 copper colored disk shape craft with a yellow glow in the center flying in a flying v formation about 500-600 feet above my house These craft were going super slow headed north and making no noise at all, almost as if they were flying low to not be detected by radar, me, my brother and father spotted these craft, after about 10 minutes or so we noticed the military jets going into afterburner ...these jets very high in the sky but i noticed because of the loud noise they made and change of speed obviously, My belief is they might have spotted these craft and attempted to chase it,nonetheless I am totally convinced UFO's exist.